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anonymous

  • one year ago

Find the exact real value of arccos((square root of 2)/2)

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  1. anonymous
    • one year ago
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    \[\arccos \left( \frac{ \sqrt{2} }{2 } \right)\]

  2. Haseeb96
    • one year ago
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    arccos x = cos^-1 (x) now what you will do . just use your calculator first press shift button then go to the cos^-1 sign button then press these values you willl get your answer

  3. anonymous
    • one year ago
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    But how do I do it without the use of calculator? :)

  4. Haseeb96
    • one year ago
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    well first you will divide sqrt 2 and 2 you will get 0.706 and now as you know the table of trigonometry there is cos 45= 0.707 So, we get it will be at 45 degrees.

  5. anonymous
    • one year ago
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    45 degrees or pi/4, right?

  6. Haseeb96
    • one year ago
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    45 is degree, but when we express its answer in radians we will say pi/4 Good job girl @mathway

  7. jdoe0001
    • one year ago
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    yeap

  8. anonymous
    • one year ago
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    Thank you @Haseeb96 !

  9. Haseeb96
    • one year ago
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    Most welcome @mathway I am glad that i helped you in your problem :)

  10. Haseeb96
    • one year ago
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    Do you have more questions ? if so tag me

  11. anonymous
    • one year ago
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    I'll open a new question. :)

  12. Haseeb96
    • one year ago
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    fine

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